Convectors

Electrical convectors are designed for heating industrial premises, technical facilities, containers, painting booths, warehouses for inflammable goods, drilling platforms and sites.

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CETAL offers a complete range of products for hazardous or explosion-proof environment.

CETAL can also design the convectors according to customer specification.

For ATEX/IECEx applications, CETAL offers connection boxes in ex “d” or “e” protection mode.

Reliability and robustness are key drivers for our engineers.

Product overview

Power from 100W to ~10kW
Voltage max. 680 V
Galvanized steel frame or stainless steel
Enamelled , steel, zinc coated or stainless steel fins

Advantages

Large range of materials and options according to customer process and conditions of use
Benefit from CETAL’s 50 years of experience as designer and manufacturer!
Equipment available for use in hazardous areas or safe environment
Robustness

Operating conditions

Normal (non-ATEX)
Hazardous areas (ATEX/IECEx) and NEC 505
Extreme environments: – 60°C to + 80 °C
Onshore / Offshore environment
Salt atmosphere

Gas

Air, max load 0.1 -8W/cm² according to sheath temperature, material: 321
Non corrosive gas

Technical description

Heating elements

The Watt density, tube diameter and the tube sheath are chosen to optimize the reliability and robustness (corrosion, temperature) of CETAL equipments.

Technologies

Tubular heating element
Ceramic heaters inside the ribbed tube.

Tube diameter & material

Tube diameter: 8.5 / 10 / 13.5 /16 mm
Tube material: Stainless steel: AISI 304 or 321
Tube type: sealed tube

Manufacturing

100% of the components come from our high-quality suppliers from Europe
100% manufacturing in CETAL factory

Connection terminals
Tube
Insulation: magnesia oxyde (Mg O), to secure optimized heat transfer and electrical insulation.
Resistance wire: Made of Nickel Chrome 80/20, it is the active part of the heating element (Joule effect)
Cold length
Sealing material: Keeps out external moisture. Different types (silicon, resins, cement) are used depending on the industrialapplication, the external medium and temperature.
Output insulation: Made of steatite ou corundum, it provides dielectric insulation (creepage distance, distance in the air).

Range description

	RAE Series		RBAE Series
According to EC type examination certification	LCIE 01 ATEX 6042 X IECEx LCIE 15.0029X		LCIE 01 ATEX 6042 X IECEx LCIE 15.0029X
Type of heating elements	Ribbed heating elements		Ceramic core element
Materials	Partially open galvanized steel frame, or stainless steel, enamelled fins. The stainless steel version is recommanded for use in particular environments such as salt-water environment.		Coated steel tube and fins
Support and chassis	Galvanized steel or stainless steel		Painted steel
ATEX/IECEx temperature class	T3 / T4		T3 / T4*
Ambient operating temperature	– 50 °C ≤ Ta ≤ + 40° C
Max. temperature on heating element	+ 200 °C (T3) / + 135 °C (T4) at 40 °C ambient temperature
Coupling	500 W and 750 W versions: 230 V 1PH Other versions: 230 V 1PH or 400 V 3PH star or delta connection **		230 V 1PH, 400 V 3PH on demand
ATEX/IECEx housing	Type d ExdIIC, painted aluminium, RAL 1004 yellow paint finish including ATEX cable gland, nickel-plated brass	Type e ExeIIC, stainless steel or painted steel including ATEX cable gland, nickel-plated brass	Type “d” ExdIIC, painted aluminium, RAL 1004 yellow paint finish
Options	Integrated thermostat, stainless steel sleeve, 0/40 °C 3PH, -20/+50 °C 1PH or 0/38 °C 1PH depending on the model
Options	Wall mounting kit Other supply voltage on demand Other ambient temperature on demand

* on request
** other voltage on demand, max. 680 V

Certification (if requested)

Certified for operation in hazardous areas in zone 1/11 and 2/22
EC-type examination certificate LCIE 01 ATEX 6042X
IECEx Certificate of Conformity LCIE 15.0029X
EAC & CU TR (former GOST)

Electrical tests

Power test by cold resistance measurement. Allowed tolerance: -5% and +10% of the nominal resistance value.
Insulationtest, direct voltage 500 V, mini cold value is > 100 Megohms
Dielectric test, (2U + 1000 V) x 1,2 during 1 second
The stray current and the hot dielectric rigidity can be measured on a sample at operating temperature (on request).
100% of the heating elements are tested before shipment (Final control)

Mechanical tests

Visual inspection

Dimensional test

Critical dimension are tested

ATEX/IECEx versions

In addition to heater design, the use of specifically developed connection boxes allows to install the products in hazardous areas.

The increased safety protection mode “e” (EN60079-7) or the explosion-proof protection mode “d” (EN 60079-1), together with temperature control acc. to EN 60079-0, make it possible to operate the equipments in hazardous area (zone 1 and zone 2) for gases of the A-B-C groups.